Levine A B, Eddleman K A, Chitkara U, Willner J P, Vosatka R J, Berkowitz R L
Department of Obstetrics, Gynecology, and Reproductive Science, Mount Sinai Medical Center, New York, NY 10029.
Prenat Diagn. 1991 Feb;11(2):111-5. doi: 10.1002/pd.1970110206.